From: Guido van Rossum <guido@python.org>
Date: Tue, 10 Sep 1991 14:53:39 +0000 (+0000)
Subject: Added work-arounds for MPW 3.{1,2?} code generation bug.
X-Git-Tag: v0.9.8~815
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7d8b509575c6138dc201d13c215359c0b68dbb18;p=thirdparty%2FPython%2Fcpython.git

Added work-arounds for MPW 3.{1,2?} code generation bug.
---

diff --git a/Parser/acceler.c b/Parser/acceler.c
index 33f91b66727b..53fa12e69d63 100644
--- a/Parser/acceler.c
+++ b/Parser/acceler.c
@@ -104,10 +104,27 @@ fixstate(g, d, s)
 			}
 			for (ibit = 0; ibit < g->g_ll.ll_nlabels; ibit++) {
 				if (testbit(d1->d_first, ibit)) {
+#ifdef applec
+#define MPW_881_bug			/* Undefine if bug below is fixed */
+#endif
+#ifdef MPW_881_BUG
+					/* In 881 mode MPW 3.1 has a code
+					   generation bug which seems to
+					   set the upper bits; fix this by
+					   explicitly masking them off */
+					int temp;
+#endif
 					if (accel[ibit] != -1)
 						printf("XXX ambiguity!\n");
+#ifdef MPW_881_BUG
+					temp = 0xFFFF &
+						(a->a_arrow | (1 << 7) |
+						 ((type - NT_OFFSET) << 8));
+					accel[ibit] = temp;
+#else
 					accel[ibit] = a->a_arrow | (1 << 7) |
 						((type - NT_OFFSET) << 8);
+#endif
 				}
 			}
 		}